Ear trumpet, including adjustable sections



Mayn 3,' 1949 s. B. BANKSON 2,469,254

EAR TRUMPET, INCLUDING ADJUSTABLE SECTION Filed Jan. 15, 1946 WWW/y 5mm Patented May 3, 1949 EAR TRUMPET, INCLUDING ADJUSTABLE SECTIONS Severin B. Bankson, San Francisco, Calif. Application January 15, 1946, Serial No. 641,269

2 Claims.

The :accompanying drawings illustrate, and the specication which is to follow pretty clearly describes and explains the use and application of one embodiment of the invention, an object of which is the provision of means thr-ough which the hearing of a person may be greatly amplified.

Another object of the invention is to provide means whereby the resonance of sounds may be conducted directly into the orifice of the ear of a user.

Another object of the invention is to provide an adjustable sound reilecting ear-piece.

A further object of this invention is to provide a substantially invisible ear engaging sound amplifier.

Other features `and advantages will become more readily apparent from the following description and the yaccompanying illustra-tive drawings in which:

Figure 1 is a perspective view of the invention,

Figure 2 is another perspective view of the device,

Figure 3 is a sectional View taken on line 3 3 of Figure 2, and

Figure 4 is a similar View taken on line 4 4 of Figure 2.

While one embodiment of the invention is illustra-ted in the above referred to drawings, it is to be understood that they are merely for the purpose of illustration and that various changes in construction may be resorted to in the course of manufacture in order that fthe invention may be utilized to the best advantage according to circumstances which may arise, Without in any way departing from the spirit and intention of the device, which is to be limited only Iin accordance with the appended claims. And while there is stated the primary field of utility of the invention it remains obvious that it may be employed in any other capacity wherein it may be found applicable.

In the accompanying drawings, and in the following specication, the same reference characters are used to designate the same parts and elements throughout and in which I refers to the invention and II indicates one member and I2, another member of the device vand each of which are in the form of shells and each having side w-alls I 2 and I2, substantially semicylindrical top, rear and bottom walls, I4, I5 I and I 6, and open in front. The side walls I2' and I2 have cut-outs which together form a C- shaped rim I1, adapted to iit closely around :the ear of a user.

The side wall edge I8, of member II, is Iprovided with a returned ilange I9, into which the edge 20, of member I3, is slidable and the said latter member being telescopically mountable within the member II. The walls I3 and I3", of said mem-bers II and I2, are each corrugated as at 23 and 24, which corrugations interlock to hold the said members II and I2 into adjusted posi-tion whereby the device may be contracted or extended to fit ears of various sizes. I'he walls I3' and I3 are offset from the said semicylindrical walls I4, I5 Iand I6, to form a sounding yboard for directing sound passing into the shell into the oriiice of the ear of a user.

The above described device is to be formed of relatively thin transparent plastic in order that it may be worn without being detectible by other persons and it is to be so positioned upon the ears .that the lower end 25 seats back oi the ear lobe in order not to interfere with pendant jewelry. In this connection, the said end 25 may be foreshortened or formed in sa. Iplane inward of that of the upper end 26. Sound directed toward the front of the device will be amplied and resonated into the ear.

From the foregoing specication it will become apparent that the invention disclosed will adequately accomplish the functions for which it has been designed and in an economical manner and that its simplicity, accuracy and ease of 0peration are such as to'provde a relatively inexpensive device considering what it will accomplish and that it will find an important place in the art to which it appertains when once placed on the market.

It is thought that Persons skilled in the :art to which the invention relates will be able to obtain a clear understanding of 'the invention after considering the description in connection with the drawings. Therefore, a more lengthy description is regarded as unnecessary.

Changes in shape, size and rearrangement of details and parts such as come within the purview of the invention claimed may be resorted to, in actual practice, if desired.

Having now described the invention, that which is claimed to be new and desired to be procured -by Letters Patent is:

1. An acoustic device comprising a pair of outer ear enclosing shell members forming a resonant chamber, each member including a. substantially rectangular plate, two contiguous margins of each of said plates being bent over to form a curved channel for enclosing a portion of the outer ear, said channels slidably interiitting each other and maintaining said shell members in 3 4 @fictional Coniact, means 0n: the plates'for lock* ing the same 1n selected adJusted posltions relav tive to each other, and another margin of one of The following references are of record 1n the said plates bent over to form a channel and enfile 0f this Patenti gaging a corresponding margin of the other plate UNITED STATES PATENTS to maintain the said shell members in sldable engagement Number Name Date 2. The combination `of cla-im 1 wherein said 1,453,959 BTOWU- May l, 1923 means includes a plurality of corrugations on 1,556375 FenSkY OC- 13, 1925 each ofsaidplates. 10 1,703,257 Campbell n Apr. 9, 1929 SEVERIN B. BANKSON. 

